6533b823fe1ef96bd127edc1
RESEARCH PRODUCT
Vibrations of weakly coupled nanoparticles
Saviot LucienDaniel B. Murraysubject
DimerFOS: Physical sciencesNanoparticle02 engineering and technology01 natural sciencesMolecular physicsLight scatteringchemistry.chemical_compoundQuantum mechanicsMesoscale and Nanoscale Physics (cond-mat.mes-hall)0103 physical sciencesPhysics::Atomic and Molecular ClustersElasticity (economics)010306 general physicsPhysicsCondensed Matter - Mesoscale and Nanoscale PhysicsNumerical analysisIsotropy[ PHYS.COND.CM-GEN ] Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]021001 nanoscience & nanotechnologyCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsCondensed Matter - Other Condensed MatterVibrationchemistry[PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]SPHERES0210 nano-technologyOther Condensed Matter (cond-mat.other)description
The vibrations of a coupled pair of isotropic silver spheres are investigated and compared with the vibrations of the single isolated spheres. Situations of both strong coupling and also weak coupling are investigated using continuum elasticity and perturbation theory. The numerical calculation of the eigenmodes of such dimers is augmented with a symmetry analysis. This checks the convergence and applicability of the numerical method and shows how the eigenmodes of the dimer are constructed from those of the isolated spheres. The frequencies of the lowest frequency vibrations of such dimers are shown to be very sensitive to the strength of the coupling between the spheres. Some of these modes can be detected by inelastic light scattering and time-resolved optical measurements which provides a convenient way to study the nature of the mechanical coupling in dimers of micro and nanoparticles.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-12-09 | Physical Review B |